4749-13-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4749-13-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,7,4 and 9 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 4749-13:
(6*4)+(5*7)+(4*4)+(3*9)+(2*1)+(1*3)=107
107 % 10 = 7
So 4749-13-7 is a valid CAS Registry Number.